Epaphus was the son of Zeus and Io, and his name means 'touching', from epaphao, 'to touch', 'stroke', since Io became pregnant simply by a touch of the hand of Zeus. His name is actually a good example of 'wilful translation', since really he began life as the Egyptian bull-god Apis (with whom Herodotus equates him). To the name of Apis was added the prefix pe-, and this produced the 'Greek' word that translates as 'touches'.